GX-281 Liquid Handler
Flexible Injection Options, Consistent Flow Rates
This liquid handler features the GX Solvent System with immediate access for up to five solvents. The GX Solvent System is a novel syringeless solvent delivery system that offers a large dynamic working range of 2 µL to 100 mL and flow rates of 1 µL/min to 25 mL/min, without changing or replacing syringes to accommodate the different volumes and flow rates. The Direct Injection Module offers an injection port that is integrated into the valve, removing a source of potential carryover.
Flow Path Optimization
The continuous flow path design on all injection valves allows the system flow to continue even as the injection valve switches from load to inject, ensuring consistent pressure and flow for flow rates up to 200 mL/min. With separate injection and collection pathways, this liquid handler ensures that fractions are never contaminated from the injection process.
Space-saving Design
With its enhanced bed capacity, this liquid handler takes up only 33 inches of linear bench space. The bed design holds up to six sample racks (up to 576 13-mm test tubes on bed) in an extremely efficient and open design. It also features the Jet Wash Rinse system, which includes a high-flow rinse pump that provides fast and efficient probe cleaning with up to six rinse solvents.
Specifications
GX-281 Liquid Handler | ||
Contact Control |
Four inputs (contact closure, TTL), four relay outputs, four switched +24V DC 1A outputs, one safety input, and one analog input Note: For your safety, do not switch voltages higher than 30V even though the output contacts are rated for high voltage. |
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Data Acquisition |
An input channel for analog-to-digital conversion Input impedance: More than 100K ohms Input voltage range: -1.0V to +1.0V Input resolution: 10μV |
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Environmental Conditions | Indoor use | |
Altitude: up to 2000 m | ||
Temperature range: 5°–40°C | ||
Air pressure: 75–105 kPa | ||
Humidity: Maximum relative humidity 80% for temperatures up to 31°C, decreasing linearly to 50% relative humidity at 40°C | ||
Liquid Handling† | Accuracy: ±2% for (100 μL–25 mL) water | |
Reproducibility: <2% | ||
Front Panel | ON/OFF and STOP soft keys and LED indicator light for power | |
Fuse | 5 x 20 mm “T” type 5.0A | |
One for 100–120V; two for 220–240V | ||
Horizontal Motion Strength |
X: 1.4 kg Y: 0.7 kg Z: 5.4 kg |
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Injection Carryover† | <0.005% | |
Injection Reproducibility † | <1.0% CV (total loop injection), <3.5% (partial loop injection) | |
Reservoir Solvents | Up to 5 | |
Rinse Solvents | Up to 6 | |
Rinse Speed | High: 200 rpm | |
Low: 120 rpm | ||
Power Requirements | Frequency: 50 to 60 Hz | |
Voltage: 100–240V (Universal Input) | ||
Current rating: 5.0A for 100–120V or 2.5A for 220–240V | ||
Power consumption: 500W maximum | ||
Fraction Collector 3-way Valve | 3-port, PTFE, 114 μL internal volume, 10 μL dead volume, up to 200 mL/min | |
Sampler Type | X/Y/Z with stationary rack design | |
Software Control | Gilson TRILUTION Software | |
Solvent Delivery Dynamic Range* |
2 μL to >100 mL *For volumes below 100 μL, Liquid Handling and Injection specifi cations may diff er from those listed above. |
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Flow Rate | Up to 25 mL/min | |
Liquid Contact Materials | Valcon H, Nitronic 60 (N60), PTFE | |
Vertical Punch Strength | 4.5 kg | |
Display | Two lines of 40 alphanumeric characters; vacuum fluorescent display | |
Instrument Weight | 68 kg | |
Dimensions (W x D x H) | 88.9 x 76.2 x 96.5 cm (35 x 30 x 38 in) |
†:Contact Gilson Customer Service to learn what methods and conditions were used to obtain the values. |
Supporting Literature
Technical Notes | |
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TN224 Automation of Post-Purification Analysis Sample Prep | Download (EN) |
Milk Testing of Lipolysis and Protein Matter | Download (EN) |
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